Spark

DTC P0016 or P0340

The camshaft position sensor correlates the crankshaft to camshaft position so that the engine control module (ECM) can determine which cylinder is ready to be fuelled by an injector. As the camshaft rotates, the reluctor wheel interrupts a magnetic field produced by a magnet within the sensor and sends a signal to the ECM through the signal circuit. The camshaft position sensor circuits are directly connected to the ECM. The camshaft position sensor also determines which cylinder is misfiring. The camshaft position sensor circuits consist of the following:

The ECM detects that the CMP sensor is not detected at the correct interval every 4 cylinder events

DTCs P0016 and P0340 are Type E DTC.

DTCs P0016 and P0340 are Type E DTC

The following conditions can also set the DTC:

Schematic Reference

Engine Controls Schematics : Siemens ECM - LPG with LCP → Siemens ECM - Gas without FX3 or LCP → Delphi ECM - FX3

Connector End View Reference

Component Connector End Views

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information.

1. Engine running, verify that the DTC P0016 or P0340 is not set.
2. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the freeze frame/failure records data.

1. Inspect the engine or review the service history of the vehicle for any recent repairs involving the timing chain, B23 camshaft position sensor or B26 crankshaft position sensor.
2. Ignition OFF, disconnect the harness connector at the B23 camshaft position sensor.
3. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 1 and ground.

⇒	If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, test all components connected to the ignition circuit and replace as necessary.

4. Ignition ON, verify that the test lamp illuminates between the ground circuit terminal 2 and the ignition circuit terminal 1.

⇒	If the test lamp does not illuminate, repair the ground circuit for an open/high resistance.

5. Ignition ON, test for 4.2-5.2V between the signal circuit terminal 3 and the ground circuit terminal 2.

⇒	If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 ECM.

⇒	If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.

6. Test for the following conditions:

•	The correct installation of the B23 camshaft position sensor

•	The correct installation of the B26 crankshaft position sensor

•	A timing chain tensioner condition

•	An incorrectly installed timing chain

•	A crankshaft or camshaft reluctor wheel that has moved in relationship to top dead centre (TDC) on the crankshaft

⇒	If you find any of the above conditions, repair as necessary.

7. If all circuits test normal, test or replace the B23 camshaft position sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.